Well now, looks like an outbreak of reasonableness here, didn't think I'd see that anytime soon on GD.
Looks like pilot error predictably, and was "showing off" at the time, he should have been at no lower than 500ft and not the 100ft he was at, and manouvere should have been within the bounds of the airstrip and not over the road:
http://www.mirror.co.uk/news/uk-news/shoreham-airshow-tragedy-former-raf-6314673
Thats the "gladiator" argument, they used to say the same thing about Grand Prix races, the thrill of the risk of death was part of the sport, they said.
Things changed. Mainly from the drivers themselves who were sick and tired of seeing their friends and colleagues massacred on the racetrack. The authorities resisted but eventually the sport was cleaned up to one of the safest motor sports, events like Ayrton Senna's death are rare now.
https://www.youtube.com/watch?v=_VtQ9Uc062M
http://www.dailymotion.com/video/x14el38_grand-prix-the-killer-years-documentary_auto
http://www.bbc.co.uk/programmes/b00z8v18